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Showing 1 to 12 of 130 entries
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Aesthetic outcomes of inframammary fold recreation in two-stage, implant-based, breast reconstruction.

SpringerPlus

Tomita K, Yano K, Nishibayashi A, Seike S, Hosokawa K.
PMID: 27730018
Springerplus. 2016 Sep 26;5(1):1656. doi: 10.1186/s40064-016-3331-x. eCollection 2016.

BACKGROUND: When the inframammary fold (IMF) is excised in mastectomy procedures for oncologic reasons, it must be recreated to restore a natural breast shape. Despite refinements in surgical techniques, postoperative loss of a well-defined IMF can occur. This study...

Copper-catalyzed enantioselective propargylic etherification of propargylic esters with alcohols.

Journal of the American Chemical Society

Nakajima K, Shibata M, Nishibayashi Y.
PMID: 25658141
J Am Chem Soc. 2015 Feb 25;137(7):2472-5. doi: 10.1021/jacs.5b00004. Epub 2015 Feb 16.

Enantioselective propargylic etherification of propargylic esters with not only aliphatic alcohols but also phenols in the presence of a catalytic amount of copper-Pybox complex gives the corresponding propargylic ethers in good to high yields with a high to excellent...

Construction of Chiral Tri- and Tetra-Arylmethanes Bearing Quaternary Carbon Centers: Copper-Catalyzed Enantioselective Propargylation of Indoles with Propargylic Esters.

Angewandte Chemie (International ed. in English)

Tsuchida K, Senda Y, Nakajima K, Nishibayashi Y.
PMID: 27346363
Angew Chem Int Ed Engl. 2016 Aug 08;55(33):9728-32. doi: 10.1002/anie.201604182. Epub 2016 Jun 27.

Copper-catalyzed enantioselective propargylation of indoles with propargylic esters and sequential Huisgen cycloaddition with azides lead to the construction of chiral triarylmethanes, bearing a quaternary carbon center, with high to excellent enantioselectivities. The result described herein can be used in...

Remarkable catalytic activity of dinitrogen-bridged dimolybdenum complexes bearing NHC-based PCP-pincer ligands toward nitrogen fixation.

Nature communications

Eizawa A, Arashiba K, Tanaka H, Kuriyama S, Matsuo Y, Nakajima K, Yoshizawa K, Nishibayashi Y.
PMID: 28374835
Nat Commun. 2017 Apr 04;8:14874. doi: 10.1038/ncomms14874.

Intensive efforts for the transformation of dinitrogen using transition metal-dinitrogen complexes as catalysts under mild reaction conditions have been made. However, limited systems have succeeded in the catalytic formation of ammonia. Here we show that newly designed and prepared...

Somatic hybrids between Brassica oleracea and B. campestris: selection by the use of iodoacetamide inactivation and regeneration ability.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik

Terada R, Yamashita Y, Nishibayashi S, Shimamoto K.
PMID: 24240998
Theor Appl Genet. 1987 Jan;73(3):379-84. doi: 10.1007/BF00262504.

An efficient procedure for obtaining somatic hybrids between B. oleracea and B. campestris has been developed. Hypocotyl protoplasts of B. oleracea were fused with mesophyll protoplasts from three different varieties of B. campestris by the polyethylene glycoldimethylsulfoxide method. The...

Erratum to: Bladder neck evaluation by perineal ultrasound before and after reconstructive surgery for pelvic organ prolapse.

Journal of medical ultrasonics (2001)

Nishibayashi M, Kobayashi K, Miki A, Okagaki R, Nagata I, Urashima M, Ishihara O.
PMID: 27277610
J Med Ultrason (2001). 2010 Jan;37(1):37. doi: 10.1007/s10396-009-0253-z.

No abstract available.

Novel Catalytic Hydrogenolysis of Trimethylsilyl Enol Ethers by the Use of an Acidic Ruthenium Dihydrogen Complex.

Angewandte Chemie (International ed. in English)

Nishibayashi Y, Takei I, Hidai M.
PMID: 10540417
Angew Chem Int Ed Engl. 1999 Oct 18;38(20):3047-3050. doi: 10.1002/(sici)1521-3773(19991018)38:20<3047::aid-anie3047>3.0.co;2-f.

The heterolytic cleavage of H(2) is the key to the novel catalytic hydrogenolysis of trimethylsilyl enol ethers catalyzed by [RuCl(eta(2)-H(2))(dppe)(2)]OTf (dppe = 1,2-bis(diphenylphosphanyl)ethane, OTf = trifluoromethanesulfonate), which results in the formation of a ketone and Me(3)SiH (see scheme). In...

Protonation of coordinated N2 on tungsten with H2 mediated by sulfido-bridged dinuclear molybdenum complexes.

Inorganic chemistry

Nishibayashi Y, Wakiji I, Hirata K, DuBois MR, Hidai M.
PMID: 11209623
Inorg Chem. 2001 Jan 29;40(3):578-80. doi: 10.1021/ic000716v.

No abstract available.

Ruthenium-catalyzed cycloaddition of propargylic alcohols with phenol derivatives via allenylidene intermediates: catalytic use of the allenylidene ligand as the C(3) unit.

Journal of the American Chemical Society

Nishibayashi Y, Inada Y, Hidai M, Uemura S.
PMID: 12095324
J Am Chem Soc. 2002 Jul 10;124(27):7900-1. doi: 10.1021/ja026168x.

Novel ruthenium-catalyzed cycloaddition of propargylic alcohols with 2-naphthols and phenols bearing electron-donating groups via allenylidene intermediates has been developed to give the corresponding 1H-naphtho[2,1-b]pyrans and 4H-1-benzopyrans, respectively, in moderate to excellent yields with complete regioselectivity.

Ruthenium- and gold-catalysed sequential reactions: a straightforward synthesis of substituted oxazoles from propargylic alcohols and amides.

Chemical communications (Cambridge, England)

Milton MD, Inada Y, Nishibayashi Y, Uemura S.
PMID: 15568080
Chem Commun (Camb). 2004 Dec 07;(23):2712-3. doi: 10.1039/b411180j. Epub 2004 Oct 13.

A convenient and straightforward one-pot reaction of propargylic alcohols bearing a terminal alkyne moiety with amides by the sequential action of ruthenium and gold catalysts gives the corresponding substituted oxazoles in good yields with a complete regioselectivity.

Synergistic dimetallic effects in propargylic substitution reaction catalyzed by thiolate-bridged diruthenium complex.

Journal of the American Chemical Society

Ammal SC, Yoshikai N, Inada Y, Nishibayashi Y, Nakamura E.
PMID: 15984870
J Am Chem Soc. 2005 Jul 06;127(26):9428-38. doi: 10.1021/ja050298z.

The origin of unique catalytic activity of a thiolate-bridged diruthenium complex in nucleophilic substitution reactions of propargylic alcohols, which features a diruthenium-allenylidene complex as a key intermediate, was studied with the aid of density functional calculations (B3LYP). Comparison of...

Ruthenium-catalyzed propargylic reduction of propargylic alcohols with silanes.

Angewandte Chemie (International ed. in English)

Nishibayashi Y, Shinoda A, Miyake Y, Matsuzawa H, Sato M.
PMID: 16802392
Angew Chem Int Ed Engl. 2006 Jul 17;45(29):4835-9. doi: 10.1002/anie.200601181.

No abstract available.

Showing 1 to 12 of 130 entries